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Electroosmotic flow: From microfluidics to nanofluidics

Electroosmotic flow (EOF), a consequence of an imposed electric field onto an electrolyte solution in the tangential direction of a charged surface, has emerged as an important phenomenon in electrokinetic transport at the micro/nanoscale. Because of their ability to efficiently pump liquids in mini...

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Detalles Bibliográficos
Autores principales: Alizadeh, Amer, Hsu, Wei‐Lun, Wang, Moran, Daiguji, Hirofumi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8247933/
https://www.ncbi.nlm.nih.gov/pubmed/33382088
http://dx.doi.org/10.1002/elps.202000313
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author Alizadeh, Amer
Hsu, Wei‐Lun
Wang, Moran
Daiguji, Hirofumi
author_facet Alizadeh, Amer
Hsu, Wei‐Lun
Wang, Moran
Daiguji, Hirofumi
author_sort Alizadeh, Amer
collection PubMed
description Electroosmotic flow (EOF), a consequence of an imposed electric field onto an electrolyte solution in the tangential direction of a charged surface, has emerged as an important phenomenon in electrokinetic transport at the micro/nanoscale. Because of their ability to efficiently pump liquids in miniaturized systems without incorporating any mechanical parts, electroosmotic methods for fluid pumping have been adopted in versatile applications—from biotechnology to environmental science. To understand the electrokinetic pumping mechanism, it is crucial to identify the role of an ionically polarized layer, the so‐called electrical double layer (EDL), which forms in the vicinity of a charged solid–liquid interface, as well as the characteristic length scale of the conducting media. Therefore, in this tutorial review, we summarize the development of electrical double layer models from a historical point of view to elucidate the interplay and configuration of water molecules and ions in the vicinity of a solid–liquid interface. Moreover, we discuss the physicochemical phenomena owing to the interaction of electrical double layer when the characteristic length of the conducting media is decreased from the microscale to the nanoscale. Finally, we highlight the pioneering studies and the most recent works on electro osmotic flow devoted to both theoretical and experimental aspects.
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spelling pubmed-82479332021-07-02 Electroosmotic flow: From microfluidics to nanofluidics Alizadeh, Amer Hsu, Wei‐Lun Wang, Moran Daiguji, Hirofumi Electrophoresis Reviews Electroosmotic flow (EOF), a consequence of an imposed electric field onto an electrolyte solution in the tangential direction of a charged surface, has emerged as an important phenomenon in electrokinetic transport at the micro/nanoscale. Because of their ability to efficiently pump liquids in miniaturized systems without incorporating any mechanical parts, electroosmotic methods for fluid pumping have been adopted in versatile applications—from biotechnology to environmental science. To understand the electrokinetic pumping mechanism, it is crucial to identify the role of an ionically polarized layer, the so‐called electrical double layer (EDL), which forms in the vicinity of a charged solid–liquid interface, as well as the characteristic length scale of the conducting media. Therefore, in this tutorial review, we summarize the development of electrical double layer models from a historical point of view to elucidate the interplay and configuration of water molecules and ions in the vicinity of a solid–liquid interface. Moreover, we discuss the physicochemical phenomena owing to the interaction of electrical double layer when the characteristic length of the conducting media is decreased from the microscale to the nanoscale. Finally, we highlight the pioneering studies and the most recent works on electro osmotic flow devoted to both theoretical and experimental aspects. John Wiley and Sons Inc. 2021-01-22 2021-04 /pmc/articles/PMC8247933/ /pubmed/33382088 http://dx.doi.org/10.1002/elps.202000313 Text en © 2020 The Authors. Electrophoresis published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Reviews
Alizadeh, Amer
Hsu, Wei‐Lun
Wang, Moran
Daiguji, Hirofumi
Electroosmotic flow: From microfluidics to nanofluidics
title Electroosmotic flow: From microfluidics to nanofluidics
title_full Electroosmotic flow: From microfluidics to nanofluidics
title_fullStr Electroosmotic flow: From microfluidics to nanofluidics
title_full_unstemmed Electroosmotic flow: From microfluidics to nanofluidics
title_short Electroosmotic flow: From microfluidics to nanofluidics
title_sort electroosmotic flow: from microfluidics to nanofluidics
topic Reviews
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8247933/
https://www.ncbi.nlm.nih.gov/pubmed/33382088
http://dx.doi.org/10.1002/elps.202000313
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